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Thread: Connect PC directly to amp

  1. #1
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    Question Connect PC directly to amp

    Hey guys,

    Forgive me if its a 'repost' but i cant for the life of me find the info i want.

    Basically, i got the "Beginners" pc pack, XP is installed etc.. My amps are installed, and i got 2 RCA (1 red 1 white) cables to connect to the PC somehow.
    The way ive done it is connected a 3.5mm stereo plug into the GREEN output on the carputer onboard sound card, which splits into a red and a white RCA input, and connected my RCA's to that.

    The sound is REALLY bad quality, and also sounds mono.

    Am i doing something wrong? Do i need something between the computer and the amp (a pre-amp)? I dont want to use a headunit, as i dont have anywhere to put one.

    If someone could give me a hand, or point me in the right direction, that would be awesome.

    Thanks guys,
    Mike

  2. #2
    Variable Bitrate
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    The sound is REALLY bad quality, and also sounds mono.
    How does it sound bad?
    If it sounds mono it's most likely a bad cable or a weird amp setting.
    Did you set the amp gains correctly.
    Have your current setup with a normal stero so you know how it should sound?

  3. #3
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    Hmm good points actually. The 3.5mm splitter i bought seems loose, and ive turned down the gains and voltage of my amp (so, no its not tuned).. Maybe ill have to have a play around with the gains and such on the amp then.
    Would it help to maybe connect the 3.5mm splitter and RCA's to an ipod and see if its the same thing?

  4. #4
    Car Audio Moderator durwood's Avatar
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    First, are you sure you bought a STEREO 3.5mm to RCA adapter and not a MONO one?

    Second, if you have an IPOD that is a good idea to try to see if it still sounds "bad". More than likely, you might be like the rest of us that don't think the quality of some onboard soundcards doesn't sound all that great. You might need to upgrade your soundcard, but first verify with another source to make sure it's the computer and not something else.

  5. #5
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    Cheap RCAs will cause this. Onboard sound will cause this. Bad wiring will cause this. Poor grounding will cause this. The program you use to play your music within Windows will cause this.
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  6. #6
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    Ok, Thanks guys.
    It turns out that my amp was on the mode for the sub. Switched that and im getting alright sound.
    RedGTiVR6, i got VERY good RCA's, wiring, ground is all good. Im just using Windows media player currently, but will get something better.
    I played the music into my X530 home speakers, and the sounds isnt all that great, but definately not what i was hearing before (amp sub setting).

    Can anyone recommend a decent external sound card? Something that doesnt chew up too much CPU. My comp is running like a dog with 1 leg (and keeps going to blue screen of death 'dumping memory').. 90 second start up times wasnt what i had in mind :|

  7. #7
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    exactly what are VERY good RCA's in your oponion?

    There's an entire list of USB and Firewire cards in the Car Audio FAQ sub-forum. I'd suggest reading there for suggestions.
    Jan Bennett
    FS: VW MKIV Bezel for 8" Lilliput - 95% Finished

    Please post on the forums! Chances are, someone else has or will have the same questions as you!

  8. #8
    Constant Bitrate
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    Quote Originally Posted by mhickin View Post
    Ok, Thanks guys.
    It turns out that my amp was on the mode for the sub. Switched that and im getting alright sound.
    how do you know what mode its in? and how did you switch it from sub to stereo?

  9. #9
    Low Bitrate
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    there is a switch on amps that is a filter either high pass, low pass, or none. thats how you control which mode the amp is in.

  10. #10
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    mhickin:

    The BSOD... I have seen quite a few blue screens and I would have to say that most that I have dealt with have been a problem with a memory module. I would suggest running something like MemTest 86+ just to check. If so, replacing the memory could be a easy way to get rid of the problem.

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